Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Question
Chapter 13.5, Problem 13.5.3CP
a)
Program Plan Intro
Abstract class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods.
An interface needs to follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors.
- All methods present in the interface are abstract.
- An interface does not contain any instance field.
- An interface cannot be extended by a class.
Given code:
//interface declaration
interface A
{
//declaration of function
void print() { };
}
b)
Program Plan Intro
Abstract class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods.
An interface needs to follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors.
- All methods present in the interface are abstract.
- An interface does not contain any instance field.
- An interface cannot be extended by a class.
Given code:
//interface declaration
abstract interface A
{
//declaration of function
abstract void print() { };
}
c)
Program Plan Intro
Abstract class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods.
An interface needs to follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors.
- All methods present in the interface are abstract.
- An interface does not contain any instance field.
- An interface cannot be extended by a class.
Given code:
//interface declaration
abstract interface A
{
//declaration of function
print() { };
}
d)
Program Plan Intro
Abstract class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods.
An interface needs to follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors.
- All methods present in the interface are abstract.
- An interface does not contain any instance field.
- An interface cannot be extended by a class.
Given code:
//interface declaration
interface A
{
//declaration of function
Void print();
}
e)
Program Plan Intro
Abstract class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods.
An interface needs to follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors.
- All methods present in the interface are abstract.
- An interface does not contain any instance field.
- An interface cannot be extended by a class.
Given code:
//interface declaration
interface A
{
//declaration of function
default void print() { }
}
f)
Program Plan Intro
Abstract class:
An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.
Interface:
Interface is a reference type in Java, which contains a collection of abstract methods.
An interface needs to follow certain conditions such as:
- One cannot instantiate an interface.
- Interfaces do not contain any constructors.
- All methods present in the interface are abstract.
- An interface does not contain any instance field.
- An interface cannot be extended by a class.
Given code:
//interface declaration
interface A
{
//declaration of static function
static int get
{
//return value
return 0;
}
//Close interface
}
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Chapter 13 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 13.2 - Prob. 13.2.1CPCh. 13.2 - The getArea() and getPerimeter() methods may be...Ch. 13.2 - True or false? a.An abstract class can be used...Ch. 13.3 - Prob. 13.3.1CPCh. 13.3 - Prob. 13.3.2CPCh. 13.3 - Prob. 13.3.3CPCh. 13.3 - What is wrong in the following code? (Note the...Ch. 13.3 - What is wrong in the following code? public class...Ch. 13.4 - Can you create a Calendar object using the...Ch. 13.4 - Prob. 13.4.2CP
Ch. 13.4 - How do you create a Calendar object for the...Ch. 13.4 - For a Calendar object c, how do you get its year,...Ch. 13.5 - Prob. 13.5.1CPCh. 13.5 - Prob. 13.5.2CPCh. 13.5 - Prob. 13.5.3CPCh. 13.5 - Prob. 13.5.4CPCh. 13.6 - Prob. 13.6.1CPCh. 13.6 - Prob. 13.6.2CPCh. 13.6 - Can the following code be compiled? Why? Integer...Ch. 13.6 - Prob. 13.6.4CPCh. 13.6 - What is wrong in the following code? public class...Ch. 13.6 - Prob. 13.6.6CPCh. 13.6 - Listing 13.5 has an error. If you add list.add...Ch. 13.7 - Can a class invoke the super.clone() when...Ch. 13.7 - Prob. 13.7.2CPCh. 13.7 - Show the output of the following code:...Ch. 13.7 - Prob. 13.7.4CPCh. 13.7 - What is wrong in the following code? public class...Ch. 13.7 - Show the output of the following code: public...Ch. 13.8 - Prob. 13.8.1CPCh. 13.8 - Prob. 13.8.2CPCh. 13.8 - Prob. 13.8.3CPCh. 13.9 - Show the output of the following code: Rational r1...Ch. 13.9 - Prob. 13.9.2CPCh. 13.9 - Prob. 13.9.3CPCh. 13.9 - Simplify the code in lines 8285 in Listing 13.13...Ch. 13.9 - Prob. 13.9.5CPCh. 13.9 - The preceding question shows a bug in the toString...Ch. 13.10 - Describe class-design guidelines.Ch. 13 - (Triangle class) Design a new Triangle class that...Ch. 13 - (Shuffle ArrayList) Write the following method...Ch. 13 - (Sort ArrayList) Write the following method that...Ch. 13 - (Display calendars) Rewrite the PrintCalendar...Ch. 13 - (Enable GeometricObject comparable) Modify the...Ch. 13 - Prob. 13.6PECh. 13 - (The Colorable interface) Design an interface...Ch. 13 - (Revise the MyStack class) Rewrite the MyStack...Ch. 13 - Prob. 13.9PECh. 13 - Prob. 13.10PECh. 13 - (The Octagon class) Write a class named Octagon...Ch. 13 - Prob. 13.12PECh. 13 - Prob. 13.13PECh. 13 - (Demonstrate the benefits of encapsulation)...Ch. 13 - Prob. 13.15PECh. 13 - (Math: The Complex class) A complex number is a...Ch. 13 - (Use the Rational class) Write a program that...Ch. 13 - (Convert decimals to fractious) Write a program...Ch. 13 - (Algebra: solve quadratic equations) Rewrite...Ch. 13 - (Algebra: vertex form equations) The equation of a...
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